Method and system for predicting intersection vehicle collision risk based on vehicle and road synergy

Abstract

The invention relates to a new method and a system for predicting intersection vehicle collision risk based on vehicle and road synergy. The method and the system predict motion state parameters of adjacent vehicles which have travelling intention conflicts in adjacent area range, and through predicting whether a vehicle in neighbourhood would get into a conflict area of a tested vehicle, and closeness degree of the vehicle and the tested vehicle in the conflict area, the method and the system can determine current travelling safety state of the tested vehicle and predict conflict risk degreeof vehicles. The method and the system give full consideration to travelling intentions of drivers of adjacent vehicles and vehicle relative motion states, to predict relative motion trends of the adjacent vehicles. The method and the system improve accuracy of vehicle conflict risk identification under complex road traffic environment, and are easy to implement. The method is low in complexity, and can be widely used in driving simulator, vehicle collision risk early warning, and vehicle safety auxiliary driving system. The method and the system are used to evaluate and predict track crossingof moving vehicles and collision risk.

Description

Technical field: [0001] The invention relates to a prediction method and system, belonging to the technical field of automobile control, and in particular to a new method and system for predicting vehicle collision risk at intersections based on vehicle-road coordination. Background technique: [0002] With the increasing number of cars, the increasing burden of road traffic makes driving safety issues more complicated. Especially in a road environment with heavy traffic, drivers of adjacent vehicles will frequently accelerate, decelerate, and change lanes to control the car to improve driving safety and efficiency, and this phenomenon can easily lead to adjacent vehicles There was a conflict between the drivers’ driving intentions. If the relative distance between the vehicle under test and the vehicle in front of the vehicle is equal to the critical vehicle safety distance, at this time, the driver of the vehicle under test adopts an acceleration strategy and the driver of the...

AI Technical Summary

Problems solved by technology

[0002] With the increasing number of cars, the burden of road traffic has made the problem of driving safety more complicated.

Especially in a road driving environment with a large traffic flow, the driver of an adjacent vehicle will control the vehicle by frequently accelerating, decelerating, and changing lanes to improve driving safety and efficiency. Conflict between driving intentions of drivers

If the relative distance between the vehicle under test and the vehicle in front of this lane is equal to the critical inter-vehicle safety distance, at this time, the driver of the vehicle under test adopts an acceleration driving strategy, and the driver of the vehicle ahead of this lane adopts emergency braking measures, then the vehicle under test and the vehicle ahead of this lane A rear-end collision accident may occur; if the motion state (position, speed) of the vehicle under test is similar to that of the vehicle behind the target lane in the longitudinal direction, at this time, the driver of the test vehicle adopts a sudden lane change strategy, and the driver of the vehicle behind the target lane adopts acceleration driving strategy, the vehicle under test may collide with the vehicle behind the target lane

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